diff options
Diffstat (limited to 'syslogd.c')
| -rw-r--r-- | syslogd.c | 104 |
1 files changed, 64 insertions, 40 deletions
@@ -80,14 +80,23 @@ static void message (char *fmt, ...) __attribute__ ((format (printf, 1, 2))); static void message (char *fmt, ...) { int fd; + struct flock fl; va_list arguments; + fl.l_whence = SEEK_SET; + fl.l_start = 0; + fl.l_len = 1; + if ((fd = device_open (logFilePath, O_WRONLY | O_CREAT | O_NOCTTY | O_APPEND | O_NONBLOCK)) >= 0) { + fl.l_type = F_WRLCK; + fcntl (fd, F_SETLKW, &fl); va_start (arguments, fmt); vdprintf (fd, fmt, arguments); va_end (arguments); + fl.l_type = F_UNLCK; + fcntl (fd, F_SETLKW, &fl); close (fd); } else { /* Always send console messages to /dev/console so people will see them. */ @@ -173,6 +182,7 @@ static void doSyslogd (void) signal (SIGTERM, quit_signal); signal (SIGQUIT, quit_signal); signal (SIGHUP, SIG_IGN); + signal (SIGCLD, SIG_IGN); signal (SIGALRM, domark); alarm (MarkInterval); @@ -216,54 +226,68 @@ static void doSyslogd (void) for (fd = 0; (n_ready > 0) && (fd < FD_SETSIZE); fd++) { if (FD_ISSET (fd, &readfds)) { + --n_ready; + if (fd == sock_fd) { - int conn; + + int conn; + pid_t pid; + if ((conn = accept (sock_fd, (struct sockaddr *) &sunx, &addrLength)) < 0) { fatalError ("accept error: %s\n", strerror (errno)); } - FD_SET (conn, &fds); - continue; - } - else { -# define BUFSIZE 1023 - char buf[ BUFSIZE + 1 ]; - int n_read; - while ((n_read = read (fd, buf, BUFSIZE )) > 0) { + pid = fork(); - int pri = (LOG_USER | LOG_NOTICE); - char line[ BUFSIZE + 1 ]; - unsigned char c; - char *p = buf, *q = line; + if (pid < 0) { + perror ("syslogd: fork"); + close (conn); + continue; + } - buf[ n_read - 1 ] = '\0'; + if (pid > 0) { - while (p && (c = *p) && q < &line[ sizeof (line) - 1 ]) { - if (c == '<') { +# define BUFSIZE 1023 + char buf[ BUFSIZE + 1 ]; + int n_read; + + while ((n_read = read (conn, buf, BUFSIZE )) > 0) { + + int pri = (LOG_USER | LOG_NOTICE); + char line[ BUFSIZE + 1 ]; + unsigned char c; + + char *p = buf, *q = line; + + buf[ n_read - 1 ] = '\0'; + + while (p && (c = *p) && q < &line[ sizeof (line) - 1 ]) { + if (c == '<') { /* Parse the magic priority number. */ - pri = 0; - while (isdigit (*(++p))) { - pri = 10 * pri + (*p - '0'); + pri = 0; + while (isdigit (*(++p))) { + pri = 10 * pri + (*p - '0'); + } + if (pri & ~(LOG_FACMASK | LOG_PRIMASK)) + pri = (LOG_USER | LOG_NOTICE); + } else if (c == '\n') { + *q++ = ' '; + } else if (iscntrl (c) && (c < 0177)) { + *q++ = '^'; + *q++ = c ^ 0100; + } else { + *q++ = c; } - if (pri & ~(LOG_FACMASK | LOG_PRIMASK)) - pri = (LOG_USER | LOG_NOTICE); - } else if (c == '\n') { - *q++ = ' '; - } else if (iscntrl (c) && (c < 0177)) { - *q++ = '^'; - *q++ = c ^ 0100; - } else { - *q++ = c; + p++; } - p++; + *q = '\0'; + /* Now log it */ + logMessage (pri, line); } - *q = '\0'; - /* Now log it */ - logMessage (pri, line); + exit (0); } - close (fd); - FD_CLR (fd, &fds); + close (conn); } } } @@ -432,9 +456,9 @@ extern int syslogd_main(int argc, char **argv) } /* - * Local Variables - * c-file-style: "linux" - * c-basic-offset: 4 - * tab-width: 4 - * End: - */ +Local Variables +c-file-style: "linux" +c-basic-offset: 4 +tab-width: 4 +End: +*/ |